Hitachi Cp-X4021n Projector Users Manual

							101
Phenomenon Cases not involving a machine defectReference 
page
Video screen
display freezes.The FREEZE function is working.
Press FREEZE button to restore the screen to normal.28
Colors have a
faded- out
appearance, or
Color tone is 
poor.Color settings are not correctly adjusted.
Perform picture adjustments by changing the COLOR TEMP, COLOR, 
TINT and/or COLOR SPACE settings, using the menu functions.34, 39
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 39
Pictures appear 
dark.The brightness and/or contrast are adjusted to an 
extremely low level.
Adjust BRIGHTNESS and/or CONTRAST settings to a 
higher level using the menu function.33
The projector is operating in Eco mode.
Set ECO MODE to NORMAL, and set AUTO ECO MODE to 
OFF, in the SETUP menu.
44
The lamp is approaching the end of its product lifetime.
Replace the lamp.89 ~ 90
Pictures appear 
blurry.Either the focus and/or horizontal phase settings are 
not properly adjusted.
Adjust the focus using the focus ring, and/or H PHASE 
using the menu function.23, 38
The lens is dirty or misty.
Clean the lens referring to the section Caring for the lens.94
Some kind 
of image 
degradation 
such as 
flickering or 
stripes appear 
on screen. When the projector is operating in Eco mode, flickering 
may appear on screen.
Set ECO MODE to NORMAL, and set AUTO ECO MODE to 
OFF, in the SETUP menu.44
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the IMAGE menu smaller.36
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.39
The FRAME LOCK function cannot work on the current 
input signal.
Set FRAME LOCK in the INPUT menu to OFF.41
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
(continued on next page) 
						

							102
Phenomenon Cases not involving a machine defectReference 
page
The computer 
connected to the 
USB TYPE B port 
of the projector 
does not start up.The computer cannot start up in the current hardware 
configuration.
Disconnect the USB cable from the computer, then 
reconnect it after starting up the computer.12
RS-232C does 
not work.The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP menu.45
The COMMUNICATION TYPE for the CONTROL port is 
set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the 
OPTION - SERVICE - COMMUNICATION menu.61
Network does 
not work
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP menu.45
NETWORK 
BRIDGE 
function does 
not work
The NETWORK BRIDGE function is turned off.
Select NETWORK BRIDGE for COMMUNICATION TYPE 
item in the OPTION - SERVICE - COMMUNICATION menu.61
Schedule function 
does not workThe SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP menu.45
When the 
projector is 
connected to the 
network, it powers 
off and on as 
described below.
Powers off
POWER indicator 
blinks in orange a 
few times
Goes into  
standby mode
Disconnect the LAN cable and check that the projector 
is working properly.
If this phenomenon occurs after connecting to the network, 
there may be a loop between two Ethernet switching hubs 
within the network, as explained below.
- There are two or more Ethernet switching hubs in a network.
- Two of the hubs are doubly connected by LAN cables.
-  
This double connection forms a loop between the two hubs.
Such a loop may have an adverse effect on the projector 
as well as the other network devices.
Check the network connection and remove the loop by 
disconnecting the LAN cables such that there is only one 
connecting cable between two hubs.
–
Video files cannot 
be played properly 
on a computer 
on which the 
"LiveViewer" was 
run.The "LiveViewer" has been intentionally or accidentally 
forced to shut down.
DirectDraw® or Direct3D® has been disabled on your Windows®. 
Please refer to the Microsoft® Help and Support home 
page on how to enable DirectDraw® or Direct3D®.
–
Troubleshooting
• Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect. NOTE Phenomena that may be easy to be mistaken for machine defects (continued) 
						

							103
Specifications
Specifications
Please see the Specifications in the User’s Manual (concise) which is a book.
End User License Agreement for the Projector Software
• Software in the projector consists of the plural number of independent software 
modules and there exist our copyright or/and third party copyrights for each of 
such software modules.
• Be sure to read “End User License Agreement for the Projector Software” which 
is separated document.